<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity
{
	private $_id;
	/**
	 * Authenticates a user.
	 * @return boolean whether authentication succeeds.
	 */
	public function authenticate()
	{
		$users=Users::model()->findByAttributes(array('username'=>$this->username));
		if ($users===null)
		{
			$this->errorCode=self::ERROR_USERNAME_INVALID;
		}else
		{
			if ($users->password!==$users->MD5P($this->password))
			{
				$this->errorCode=self::ERROR_PASSWORD_INVALID;
			}else
			{
				$this->_id = $users->id;
				if (null === $users->lastvisitDate)
					$lastLogin = time ();
				else 
					$lastLogin = strtotime($users->lastvisitDate);
				$this->setState('LastvisitDate', $lastLogin);
				$this->errorCode=self::ERROR_NONE;
			}
		}
		return !$this->errorCode;
	}
	
	public function getId()
	{
		return $this->_id;
	}
}